[XenPPC] [pushed] [ppc] handle EVTCHNOPs from prvicmd

[jimix@xxxxxxxxxxxxxx]

changeset:   28277:6015477da516af171341708364dbb60c09fb2202
tag:         tip
user:        jimix@xxxxxxxxxxxxxxxxxxxxx
date:        Tue May 23 16:50:40 2006 -0400
files:       arch/powerpc/platforms/xen/hcall.c
description:
[ppc] handle EVTCHNOPs from prvicmd


diff -r fadeca5415a3d3104c3d20c6decf8029ea2a0016 -r 
6015477da516af171341708364dbb60c09fb2202 arch/powerpc/platforms/xen/hcall.c
--- a/arch/powerpc/platforms/xen/hcall.c        Tue May 23 10:36:55 2006 -0400
+++ b/arch/powerpc/platforms/xen/hcall.c        Tue May 23 16:50:40 2006 -0400
@@ -251,6 +251,38 @@ static int xenppc_privcmd_version(privcm
        return ret;
 }
 
+static int xenppc_privcmd_event_channel_op(privcmd_hypercall_t *hypercall)
+{
+       struct xencomm_desc *desc;
+       unsigned int argsize;
+       int ret;
+
+       switch (hypercall->arg[0]) {
+       case EVTCHNOP_alloc_unbound:
+               argsize = sizeof(evtchn_alloc_unbound_t);
+               break;
+
+       case EVTCHNOP_status:
+               argsize = sizeof(evtchn_status_t);
+               break;
+
+       default:
+               printk("%s: unknown EVTCHNOP (%ld)\n",
+                      __func__, hypercall->arg[0]);
+               return -EINVAL;
+       }
+
+       ret = xencomm_create((void *)hypercall->arg[1], argsize, &desc, 
GFP_KERNEL);
+       if (ret)
+               return ret;
+
+       ret = plpar_hcall_norets(XEN_MARK(hypercall->op), hypercall->arg[0],
+                       __pa(desc), 0, 0, 0, 0);
+
+       xencomm_free(desc);
+       return ret;
+}
+
 /* The PowerPC hypervisor runs in a separate address space from Linux
  * kernel/userspace, i.e. real mode. We must therefore translate userspace
  * pointers to something the hypervisor can make sense of. */
@@ -263,6 +295,8 @@ int arch_privcmd_hypercall(privcmd_hyper
                return xenppc_privcmd_memory_op(hypercall);
        case __HYPERVISOR_xen_version:
                return xenppc_privcmd_version(hypercall);
+       case __HYPERVISOR_event_channel_op:
+               return xenppc_privcmd_event_channel_op(hypercall);
        default:
                printk("%s: unknown hcall (%ld)\n", __func__, hypercall->op);
                return plpar_hcall_norets(XEN_MARK(hypercall->op),



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